I bought a 2002 dodge ram from there it had 74 tho...

I bought a 2002 dodge ram from there it had 74 thousand miles on it I had it three weeks and the motor went out... I've tried to see if they will do anything and they refuse to help me at all...its effecting my work in return is ruining me I can't pay all my bills and might end up without a home...disrespectfull people!